Bank of India is a government-owned commercial bank with headquarters in Mumbai. It was nationalized in 1969. It is India's 4th largest PSU bank, after State Bank of India, Punjab National Bank and Bank of India. It has around 4200 branches as on April 2012, including 29 branches outside India, and around 1700 ATMs. Bank of India is a founder member of SWIFT - Society for Worldwide Inter Bank Financial Telecommunications, which facilitates provision of cost-effective financial processing and communication services. The Bank completed its first one hundred years of operations in 2006.